PROCESSING-SURFACE PREPARATION-DOW #17 ANODIZE PROCESS-BONDING HK-31 MAGNESIUM-THORIUM ALLOY-PROCESS VARIABLES-INVESTIGATION OF
GENERAL DYNAMICS CORP POMONA CA POMONA DIV
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A proposed elevon wedge design requires the use of bonded magnesium- thorium alloy. The Dow 17 treatment applied to HK-31 magnesium-thorium alloy protects the surface of the alloy against corrosion and offers a potentially good surface for adhesive bonding. Adhesive bonding of Dow 17 treated HK-31 magnesium-thorium alloy was investigated. From the data obtained, it is concluded that a satisfactory surface for bonding with AF-31 is produced when HK-31 magnesium-thorium alloy is given the light 60-65 volts end-point Dow 17 treatment and primed with EC-1459 prior to bonding. Higher end point voltages do not produce a satisfactory bonding surface whether or not the primer is applied.
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